原因：
com/mysql/cj/jdbc/Driver是6.0版本的驱动，兼容JDK8环境，不兼容JDK7环境，在基于jdk7的tomcat中编译运行会出错，在基于jdk8的tomcat中编译运行则不会出错。
解决方案：
1、jdk7+老版5.0驱动com/mysql/jdbc/Driver
2、jdk8+新版6.0驱动com/mysql/cj/jdbc/Driver
相关文章
- 07-19java.lang.UnsupportedClassVersionError: com/mysql/cj/jdbc/Driver : Unsupported major.minor version 52.0 (unable to load class [com.mysql.cj.jdbc.Driver])
- 07-19Oozie时出现Exception in thread "main" java.lang.UnsupportedClassVersionError: com/mysql/jdbc/Driver : Unsupported major.minor version 52.0？
- 07-19java.lang.UnsupportedClassVersionError: com/mysql/jdbc/Driver : Unsupported major.minor version 52.0
- 07-19java.lang.UnsupportedClassVersionError: com/gargoylesoftware/htmlunit/WebClient : Unsupported major.minor version 52.0 (unable to load class com.gargoylesoftware.htmlunit.WebClient)